欠平衡钻井可行性论证与设计  

DISCUSSION ON EVALUATION METHOD OF UNDERBALANCED DRILLING FEASIBILITY

作　　者：朱忠喜[1,2] 李军[1] 刘颖彪[3] 雷万能[4] 蒋记伟[1] 

机构地区：[1]中国石油大学石油工程教育部重点实验室.北京 [2]中国石油集团公司钻井重点实验室长江大学研究室 [3]新疆油田公司勘探开发研究院 [4]塔里木油田勘探事业部

出　　处：《钻采工艺》2010年第6期21-25,共5页Drilling & Production Technology

基　　金：国家重点基础研究发展计划(973)课题(2010CB226704);国家油气重大专项课题(2008ZX05021-003)

摘　　要：虽然欠平衡钻井技术作为油气勘探开发的重要工程手段,但是并非所有的地层条件和油藏类型和施工单位都适合应用。目前国内外研究的重点主要集中在地层压力剖面预测一个层面上。文章从地层可行性和工程可行性两个大的方面分不同指标给出了一套欠平衡钻井可行性评价方法,给出了各种指标在评价中的作用和获取方法。同时结合新疆油田一口风险探井应用提出的欠平衡钻井可行性评价方法进行了实例评价,评价结果能够为选用何种欠平衡钻井方式提供依据,也能够指导欠平衡钻井工程设计中的钻井方式转换和应急预案制定工作。Although underbalanced drilling technology is the important means of oil-gas exploration and development,it is not suitable for all types of the formation conditions and reservoir.Now,the focus of research both in China and abroad is mainly concentrated in predicting formation pressure.According to the feasibility of the formation and engineering,a set of underbalanced drilling feasibility evaluation methods was founded by different index given.As an example,a exploratory-risk-well in Xinjiang oilfield was evaluated by the underbalanced drilling feasibility method.And the evaluation results were available to optimize underbalanced drilling model,also could provide guidance for the conversion of drilling models and drafting contingency planning.

关 键 词：欠平衡钻井 气体钻井 可行性 敏感性 地层压力 

分 类 号：TE249[石油与天然气工程—油气井工程]